Hey there, if you are looking for your link class, here´s the place:

1st grade

Use (II, III) : https://classroom.google.com/u/2/c/NTUwOTM0MDcxMTda
class code: 77iqglo

Social  (IV, V): https://classroom.google.com/u/2/c/NTUwODI3MjQxMTha
class code: ahkmdux

2nd grade

Use (I): https://classroom.google.com/u/3/c/NTUwODI3MjQxMzBa
class code: iorqq6u

Science (IV, V): https://classroom.google.com/u/3/c/NTUwOTU3ODU2NjBa
class code: sarjjcf

3rd grade

Lit (II, III): https://classroom.google.com/u/4/c/NTUwOTU3ODU2NzRa
class code:qnoai5g

Social (IV, V): https://classroom.google.com/u/4/c/NTUwOTU3ODU2ODRa
class code: 4wh6dhm